WP 7.3 pictures 24/04/2017 Charlotte Le Traon zoom on the observation cell receiving sensors 3D view of the instrumented packer prototype in development WP 7.3: tracing tests Installation of the packer system in drilling for the characterization of a microbial reactivity hotspot at Ploemeur (H +) site The water flows between the boreholes is pumped and analyzed continuously in the truck. A mobile laboratory set up in the field as part of a tracing test. Images